Article | REF: R1333 V1

Non-contact measurement - Optical methods (part 2)

Author: Jean‐Louis CHARRON

Publication date: June 10, 2004

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6. Theodolite

For further details, please refer to the article Using theodolites in mechanics – Intersection measuring systems (IMS) [R 1 382] in this treatise, as well as paragraph 2.3.3 of the article Controlling angles [R 1 300] .

6.1 Principle

A theodolite can be used to measure the direction in which points on a part, machine or site can be seen from a fixed point. Two angular displacement sensors measure the position of the telescope axis in relation to the reference axes (the angle in the vertical plane, or azimuth, and the horizontal angle). The theodolite's vertical axis is usually set vertically...

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